Compilare: user.cpp: In function ‘void KMP(char*, char*, int*)’: user.cpp:22:7: warning: unused variable ‘n’ [-Wunused-variable] { int n=strlen(s),i,k=0,m=strlen(t); ^ user.cpp: In function ‘int main()’: user.cpp:37:5: warning: unused variable ‘i’ [-Wunused-variable] int i; ^